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Items: 5

1.

Inherited susceptibility to asthma

Bronchial asthma is the most common chronic disease affecting children and young adults. It is a complex genetic disorder with a heterogeneous phenotype, largely attributed to the interactions among many genes and between these genes and the environment. Asthma-related traits include clinical symptoms of asthma, such as coughing, wheezing, and dyspnea; bronchial hyperresponsiveness (BHR) as assessed by methacholine challenge test; serum IgE levels; atopy; and atopic dermatitis (Laitinen et al., 2001; Illig and Wjst, 2002; Pillai et al., 2006). See 147050 for information on the asthma-associated phenotype atopy. [from OMIM]

MedGen UID:
358271
Concept ID:
C1869116
Finding
2.

Mucopolysaccharidosis, MPS-IV-A

The phenotypic spectrum of mucopolysaccharidosis IVA (MPS IVA) is a continuum that ranges from a severe and rapidly progressive early-onset form to a slowly progressive later-onset form. Children with MPS IVA typically have no distinctive clinical findings at birth. The severe form is usually apparent between ages one and three years, often first manifesting as kyphoscoliosis, genu valgum (knock-knee), and pectus carinatum; the slowly progressive form may not become evident until late childhood or adolescence, often first manifesting as hip problems (pain, stiffness, and Legg Perthes disease). Progressive bone and joint involvement leads to short stature, and eventually to disabling pain and arthritis. Involvement of other organ systems can lead to significant morbidity, including respiratory compromise, obstructive sleep apnea, valvular heart disease, hearing impairment, visual impairment from corneal clouding, dental abnormalities, and hepatomegaly. Compression of the spinal cord is a common complication that results in neurologic impairment. Children with MPS IVA have normal intellectual abilities at the outset of the disease. [from GeneReviews]

MedGen UID:
43375
Concept ID:
C0086651
Disease or Syndrome
3.

Spondyloepimetaphyseal dysplasia, aggrecan type

A new form of skeletal dysplasia with manifestations of severe short stature, facial dysmorphism and characteristic radiographic findings. To date, three cases have been described, all originating from the same family. The disease results from a missense mutation affecting the C-type lectin domain of aggrecan (AGC1 gene; chromosome 15) which regulates endochondral ossification. Transmission is autosomal recessive. [from SNOMEDCT_US]

MedGen UID:
411237
Concept ID:
C2748544
Disease or Syndrome
4.

Asthma, nasal polyps, and aspirin intolerance

MedGen UID:
347198
Concept ID:
C1859648
Disease or Syndrome
5.

Sudden infant death-dysgenesis of the testes syndrome

Sudden infant death with dysgenesis of the testes syndrome (SIDDT) is characterized by sudden cardiac or respiratory arrest, disordered testicular development, and neurologic dysfunction, and is uniformly fatal before 1 year of age (Slater et al., 2020). [from OMIM]

MedGen UID:
332428
Concept ID:
C1837371
Disease or Syndrome
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